scholarly journals Feather mites at night: an exploration of their feeding, reproduction, and spatial ecology

Ecology ◽  
2021 ◽  
Author(s):  
María del Mar Labrador ◽  
Jorge Doña ◽  
David Serrano ◽  
Roger Jovani
Keyword(s):  
Spatial Ecology ◽  
Feather Mites

Large-scale spatial ecology of dung beetles

Ecography ◽  
2001 ◽  
Vol 24 (5) ◽  
pp. 511-524 ◽  
Author(s):  
Tomas Roslin
Keyword(s):  
Spatial Ecology ◽  
Large Scale ◽  
Dung Beetles

Spatial ecology and growth in early life stages of bay anchovy Anchoa mitchilli in Chesapeake Bay (USA)

2020 ◽  
Vol 651 ◽  
pp. 125-143
Author(s):  
TD Auth ◽  
T Arula ◽  
ED Houde ◽  
RJ Woodland
Keyword(s):  
Chesapeake Bay ◽  
Spatial Ecology ◽  
Environmental Variability ◽  
Larval Growth ◽  
Larval Abundance ◽  
Spatial And Temporal Variability ◽  
Estuarine Ecosystem ◽  
Anchoa Mitchilli ◽  
Larval Production ◽  
Bay Anchovy

The bay anchovy Anchoa mitchilli is the most abundant fish in Chesapeake Bay (USA) and is a vital link between plankton and piscivores within the trophic structure of this large estuarine ecosystem. Baywide distributions and abundances of bay anchovy eggs and larvae, and larval growth, were analyzed in a 5 yr program to evaluate temporal and spatial variability based on research surveys in the 1995-1999 spawning seasons. Effects of environmental variability and abundance of zooplankton that serve as prey for larval bay anchovy were analyzed. In the years of these surveys, 97.6% of eggs and 98.8% of larvae occurred in the polyhaline lower bay. Median egg and larval abundances differed more than 10-fold for surveys conducted in the 5 yr and were highest in the lower bay. Within years, median larval abundance (ind. m-2) in the lower bay was generally 1-2 orders of magnitude higher than upper-bay abundance. Salinity, temperature, and dissolved oxygen explained 12% of the spatial and temporal variability in egg abundances and accounted for 27% of the variability in larval abundances. The mean, baywide growth rate for larvae over the 5 yr period was 0.75 ± 0.01 mm d-1, and was best explained by zooplankton concentration and feeding incidence. Among years, mean growth rates ranged from 0.68 (in 1999) to 0.81 (in 1998) mm d-1 and were fastest in the upper bay. We identified environmental factors, especially salinity, that contributed to broadscale variability in egg and larval production.

Kalahari Cheetahs

2017 ◽  
Author(s):  
Gus Mills ◽  
Margaret Mills
Keyword(s):  
Reproductive Success ◽  
Spatial Ecology ◽  
Prey Selection ◽  
Arid Ecosystems ◽  
Foraging Success ◽  
Ecological Processes ◽  
Demographic Groups ◽  
Important Prey ◽  
Hunting Behaviour ◽  
The Impact

This book demonstrates how cheetahs are adapted to arid savannahs like the southern Kalahari, and makes comparisons with other areas, especially the Serengeti. Topics dealt with are: demography and genetic status; feeding ecology, i.e. methods used for studying diet, diets of different demographic groups, individual diet specializations of females, prey selection, the impact of cheetah predation on prey populations, activity regimes and distances travelled per day, hunting behaviour, foraging success and energetics; interspecific competition; spatial ecology; reproductive success and the mating system; and conservation. The major findings show that cheetahs are well adapted to arid ecosystems and are water independent. Cheetah density in the study area was stable at 0.7/100 km2 and the population was genetically diverse. Important prey were steenbok and springbok for females with cubs, gemsbok, and adult ostrich for coalition males, and steenbok, springhares, and hares for single animals. Cheetahs had a density-dependent regulatory effect on steenbok and springbok populations. Females with large cubs had the highest overall food intake. Cheetahs, especially males, were often active at night, and competition with other large carnivores, both by exploitation and interference, was slight. Although predation on small cubs was severe, cub survival to adolescence was six times higher than in the Serengeti. There was no difference in reproductive success between single and coalition males. The conservation priority for cheetahs should be to maintain protected areas over a spectrum of landscapes to allow ecological processes, of which the cheetah is an integral part, to proceed unhindered.

Spatial Ecology of the Eastern Hellbender (Cryptobranchus alleganiensis alleganiensis) in Indiana

Herpetologica ◽  
2011 ◽  
Vol 67 (2) ◽  
pp. 135-145 ◽  
Author(s):  
Nicholas G Burgmeier ◽  
Trent M Sutton ◽  
Rod N Williams
Keyword(s):  
Spatial Ecology ◽  
Cryptobranchus Alleganiensis ◽  
Eastern Hellbender

scholarly journals Spatial Ecology of Atlantic Halibut across the Northwest Atlantic: A Recovering Species in an Era of Climate Change

2021 ◽  
pp. 1-25
Author(s):  
Nancy L. Shackell ◽  
Jonathan A. D. Fisher ◽  
Cornelia E. den Heyer ◽  
Daniel R. Hennen ◽  
Andrew C. Seitz ◽  
...  
Keyword(s):  
Climate Change ◽  
Spatial Ecology ◽  
Atlantic Halibut ◽  
Northwest Atlantic

Indirect predation management in a longleaf pine ecosystem: Hardwood removal and the spatial ecology of raccoons

2016 ◽  
Vol 381 ◽  
pp. 327-334 ◽  
Author(s):  
R. Brian Kirby ◽  
Michael J. Cherry ◽  
Lisa I. Muller ◽  
Robert J. Warren ◽  
Michael J. Chamberlain ◽  
...  
Keyword(s):  
Spatial Ecology ◽  
Longleaf Pine
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